Psychology Colloquia

Abstract:: It has been hypothesized that perceptual grouping in the human visual system can be driven by fine-grained (~10ms) temporally synchronous stimuli. This theory is particularly intriguing given its link to the claims of neural binding based on temporal synchrony. In this talk it is argued, however, that previous psychophysical evidence for this hypothesis is due to stimulus artifacts. It is further shown that a classic spatio-temporal energy model is sufficient to explain many of these earlier results. It is concluded that no evidence exists to support the claims of synchrony-sensitive, or similarly novel, grouping mechanisms or processes.
About the Speaker:: Hany Farid received his undergraduate degree in Computer Science and Applied Mathematics from the University of Rochester in 1989. He received his Ph.D. in Computer Science from the University of Pennsylvania in 1997. Following a two year post-doctoral position in Brain and Cognitive Sciences at MIT, he joined the Dartmouth faculty in 1999. Hany's primary appointment is in the Computer Science Department where he is an Associate Professor and Associate Chair. He also holds a joint appointment in the Center for Cognitive Neuroscience.
From working with federal law enforcement agencies on digital forensics, to the digital reconstruction of Ancient Egyptian tombs, Hany works and plays with digital media at the crossroads of computer science, engineering, mathematics, optics, and psychology.

For More Information About This Speaker And This Topic:

http://www.cs.dartmouth.edu/~farid/
Dr. Farid's website.
http://www.cs.dartmouth.edu/~farid/publications/
Selected papers by Dr. Farid.
http://www.cs.dartmouth.edu/~farid/cv.pdf
Dr. Farid's curriculum vitae. (PDF file.)
http://www.cs.dartmouth.edu/farid/publications/tics02.html
http://www.cs.dartmouth.edu/farid/publications/nn01.html
Two papers related to this talk.

University of California, San Diego
Homepage Calendar Directions Past Events Psych Homepage UCSD Homepage	The Department of Psychology is Honored to Present a Talk by Hany Farid Dartmouth "Energy vs. Synchrony in Perceptual Grouping" Presented on November 3, 2005 Location: The Crick Conference Room Mandler Hall, room 3545 Abstract: It has been hypothesized that perceptual grouping in the human visual system can be driven by fine-grained (~10ms) temporally synchronous stimuli. This theory is particularly intriguing given its link to the claims of neural binding based on temporal synchrony. In this talk it is argued, however, that previous psychophysical evidence for this hypothesis is due to stimulus artifacts. It is further shown that a classic spatio-temporal energy model is sufficient to explain many of these earlier results. It is concluded that no evidence exists to support the claims of synchrony-sensitive, or similarly novel, grouping mechanisms or processes. About the Speaker: Hany Farid received his undergraduate degree in Computer Science and Applied Mathematics from the University of Rochester in 1989. He received his Ph.D. in Computer Science from the University of Pennsylvania in 1997. Following a two year post-doctoral position in Brain and Cognitive Sciences at MIT, he joined the Dartmouth faculty in 1999. Hany's primary appointment is in the Computer Science Department where he is an Associate Professor and Associate Chair. He also holds a joint appointment in the Center for Cognitive Neuroscience. From working with federal law enforcement agencies on digital forensics, to the digital reconstruction of Ancient Egyptian tombs, Hany works and plays with digital media at the crossroads of computer science, engineering, mathematics, optics, and psychology. For More Information About This Speaker And This Topic: http://www.cs.dartmouth.edu/~farid/ Dr. Farid's website. http://www.cs.dartmouth.edu/~farid/publications/ Selected papers by Dr. Farid. http://www.cs.dartmouth.edu/~farid/cv.pdf Dr. Farid's curriculum vitae. (PDF file.) http://www.cs.dartmouth.edu/farid/publications/tics02.html http://www.cs.dartmouth.edu/farid/publications/nn01.html Two papers related to this talk.
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